Wikia/app — pull request #2418 by nandy-andy (2014-01-09 13:51:50+00:00)
Title: CONN-2 Clean up in UserLogin after the issue during the time when fastly was down

**!!! DO NOT MERGE !!!**

So far, we:
* made `$username` and `$password` properties private,
* fixed edge-case with never-ending appends to `returntoquery` parameter,
* added few unit tests